Database.Selda.JSON

Documentation

class JSONBackend b where

Any backend that supports JSON lookups in queries.

Methods

(~>) :: JSONValue a => Col b a -> Col b Text -> Col b (Maybe Value) infixl 8

Look up the given key in the given JSON column.

jsonToText :: Col b Value -> Col b Text

Convert the given JSON column to plain text.

Instances

JSONBackend b => JSONBackend (Inner b)

Defined in Database.Selda.JSON

Methods

(~>) :: JSONValue a => Col (Inner b) a -> Col (Inner b) Text -> Col (Inner b) (Maybe Value)

jsonToText :: Col (Inner b) Value -> Col (Inner b) Text

Orphan instances

ToJSON RowID

Methods

toJSON :: RowID -> Value

toEncoding :: RowID -> Encoding

toJSONList :: [RowID] -> Value

toEncodingList :: [RowID] -> Encoding

FromJSON RowID

Methods

parseJSON :: Value -> Parser RowID

parseJSONList :: Value -> Parser [RowID]

SqlType Value

Methods

mkLit :: Value -> Lit Value

sqlType :: Proxy Value -> SqlTypeRep

fromSql :: SqlValue -> Value

defaultValue :: Lit Value

ToJSON (ID a)

Methods

toJSON :: ID a -> Value

toEncoding :: ID a -> Encoding

toJSONList :: [ID a] -> Value

toEncodingList :: [ID a] -> Encoding

FromJSON (ID a)

Methods

parseJSON :: Value -> Parser (ID a)

parseJSONList :: Value -> Parser [ID a]